Research indicates that the Picture Exchange Communication System® (PECS®) is an evidence-based communication approach for children diagnosed with autism spectrum disorder (ASD). However, little is known about PECS-related parent training, treatment fidelity, or generalization and maintenance of skills. The purpose of the current study was to explore strategies to help parents support their child's PECS use at home. One child with ASD and both his parents participated. Researchers used behavioral skills training to teach target PECS skills and applied general case training strategies to actively program for generalization. A multiple baseline design across skills was used to monitor the primary parent trainee's fidelity during training sessions and a multiple probe design was embedded to monitor both parents' treatment fidelity in the natural environment with their child. The parent trainee demonstrated target PECS skills within the training setting. However, parents did not reliably demonstrate all target PECS skills in the generalization setting during follow-up.